The other two schemes are based on SYN cache and SYN? Cookies (see 6.4), simplifies the state initialized when the TCB is generated by receiving the SYN, and delays the instantiation of the full state [4]. In hosts that use SYN caching, a HASH tablespace with a limited size is used to store a subset of data that will be allocated to the TCB. If the ACK is received when the handshake is completed, the data will be copied into a complete TCB, otherwise HASH values exceeding the lifetime will be recycled when needed. In Lemon's FreeBSD, the SYN cache is 160 bytes for a half-open connection, while a full TCB is 736 bytes and supports 15,359 SYN cache spaces.Looking back on this social practice, I have learned a lot, learned a lot of social experience from everyone I contact, and improved my potential, which I cannot learn in school. It takes long-term practice to be good at communicating with others in society. In the past, I did not have the opportunity to work, which made me unable to adapt to changes when talking with others and made the conversation silent. This was very embarrassing. People will integrate into the social group in the society, and people will work together to make the process of doing things more harmonious and get twice the result with half the effort. You should listen to the opinions given to you by others and understand them patiently and modestly. Be confident in your work. Confidence is not a numb boast, but an affirmation of one's potential. Lack of social experience, lack of academic qualifications and other reasons will make self-confidence lack. In fact, anyone who is born with confidence can overcome psychological barriers and everything will become easy to solve. The accumulation of knowledge is also very important. Knowledge is like human blood. Without blood, one's body will weaken, and without knowledge, one's mind will dry up. The brewing industry contacted this time is very strange to me. If I want to do a good job, I must understand this knowledge and have in-depth understanding of all aspects so as to better apply it to my work.You have the right to judge yourself as a stupid ordinary person. I mean to remind you that as long as you have a definite goal, doing anything at any time will not hinder or even help thinking and research. They think they have wasted their time, but they have not actually wasted it.In addition, the war situation of the army is different, The composition of the loss varies considerably, Taking the Soviet Union during the Soviet-German War as an example, The average monthly losses of Soviet troops over the years are: In 1941, 710,000, 1942, 614,000, 1943, 655,000, 1944, 573,000 and 1945, 700,000, the difference is not too big. The ratio of 1941, which suffered the worst loss, to 1944, which suffered the least loss, is only 1.24 times. However, the proportion of dead, wounded and prisoners in the losses over the years is quite different. The average monthly number of dead and missing persons in 1941, 271,000 in 1942, 1943, 147,000 in 1944 and 186,000 in 1945 is 496,000, 3.37 times higher than that in 1945.Grenades (mines x 5)Three days before the launch ceremony, on December 29, 2018, General Secretary Xi Jinping said at the New Year's Tea Party held in the auditorium of the National Committee of the Chinese People's Political Consultative Conference, "We should advocate learning and strengthen learning". The words sound just fell and "learning power" went online.When learning design patterns, there are some skills that can help you quickly understand design patterns.